
基本信息:
- 专利标题: 一种1,1-二氟乙烷的气相提纯方法
- 专利标题(英):Gas phase purification method for 1,1-difluoroethane
- 申请号:CN200910155070.3 申请日:2009-12-16
- 公开(公告)号:CN102101823A 公开(公告)日:2011-06-22
- 发明人: 潘彦 , 郭荔 , 赵卫娟 , 柳彩波 , 洪慧能 , 黄友良
- 申请人: 中化蓝天集团有限公司
- 申请人地址: 浙江省杭州市体育场路487号
- 专利权人: 中化蓝天集团有限公司
- 当前专利权人: 中化蓝天集团有限公司
- 当前专利权人地址: 浙江省杭州市体育场路487号
- 代理机构: 浙江杭州金通专利事务所有限公司
- 代理人: 刘晓春
- 主分类号: C07C19/08
- IPC分类号: C07C19/08 ; C07C17/389 ; B01J20/34
The invention relates to a method for purifying 1,1-difluoroethane by gas phase absorption separation. In the method, by using one or more of silica gel, activated aluminum oxide, activated magnesia and aluminosilicate absorbents and carbon absorbents, preferably an absorbent with a Brunauer-Emmett-Teller (BET) specific surface area more than or equal to 400m<2>/g and a single-point average aperture of 5 to 30 angstroms, the 1,1-difluoroethane content in a 1,1-difluoroethane coarse product containing vinyl chloride can be improved to over 99.99 percent, the total olefin content is reduced to below tens of ppm or even below 10ppm, and the vinyl chloride content is reduced to below several ppm or even below 1ppm. The 1,1-difluoroethane can be used alone or in combination with other materials as a low-temperature refrigerator, a foaming agent, a propellant, an etching gas, a cleaning agent or an intermediate of other fluorocarbons.
公开/授权文献:
- CN102101823B 一种1,1-二氟乙烷的气相提纯方法 公开/授权日:2013-08-28